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Finding the Fourth Proportional to 146,009.40, 218,980.92 and 67,047.72

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Solution

The fourth proportional to 146,009.40, 218,980.92 and 67,047.72 is: 100,556.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,009.40 : 218,980.92 = 67,047.72 : x
  2. Step 2: Convert to fraction form
    146,009.40/218,980.92 = 67,047.72/x
  3. Step 3: Cross multiply
    146,009.40x = 218,980.92 × 67,047.72
  4. Step 4: Simplify right side
    146,009.40x = 14,682,171,409.50
  5. Step 5: Solve for x
    x = 14,682,171,409.50/146,009.40
  6. Step 6: Final answer
    x = 100,556.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.